Which report and metric should you analyze to see how often your client's ads are showing above search results in comparison with other advertisers?

  
Which report and metric should you analyze to see how often your client's ads are showing above search results in comparison with other advertisers?
  A)  Ad group data that you customize with the Report Editor
  B)  Ad average position metric from the paid and organic report
  C)  Average position metric from the top movers report
  D)  Top of page rate metric from the Auction insights report